How are self-replicating molecules, such as rna molecules in the “rna world” hypothesis, essential to the most popular hypotheses about the origin of life on earth?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

List two modern organisms that have pentameral symmetry

What must be true for natural selection to heppen